user
Below is an instruction that describes a task, paired with an input that provides further context. Write a response that appropriately completes the request.

### Instruction:
Rewrite the description below by replacing repetitive words and phrases with synonyms.

### Input:
A coral reef is a group of coral colonies that form an underwater community of animals and plants.

### Response:
assistant
A coral reef is an aggregation of coral colonies that construct an aquatic habitat of creatures and vegetation.